Three people have been injured after a school shooting in Iowa, police have said.

Dallas County Sheriff Adam Infante said there is no further risk to the public.

The shooter is believed to have died from an apparent self-inflicted gunshot and may have been a student, according to Sky News’s US partner network NBC News.

The three injured include two students and an administrator, Sheriff Infante said.

The shooting took place at about 7.30am local time (1;30pm UK time) at Perry High School and officers arrived seven minutes later, the sheriff added.

A huge amount of emergency vehicles surrounded the building that houses both the town’s middle school and high school after the shooting.

‘The most scared I have been in my entire life’

Zander Shelley, 15, was in a hallway waiting for the school day to start when he heard gunshots and dashed into a classroom, according to his father, Kevin Shelley.

Zander was grazed twice and hid in the classroom before texting his father at 7:36 am.

Kevin Shelley, who drives a garbage truck, told his boss he had to leave work.

“It was the most scared I’ve been in my entire life,” he said.

Mother’s desperate search for son

Erica Jolliff said that her daughter, a ninth grader, reported getting rushed from the school grounds at 7:45 am.

Distraught, Ms Jolliff was still looking for her son Amir, a sixth grader, one hour later.

“I just want to know that he’s safe and OK,” she said. “They won’t tell me nothing.”

‘One of our teaches started screaming at us’

A student named only as Carlos, who was outside the school at the time of the shooting, told NBC News: “I just heard a couple of bangs, not really gunshots. They were not very loud.

“We saw a bunch of kids running and we asked what happened… one of my girlfriend’s friends said it was a shooting, there was a shooter with a gun, and we got scared, we thought it was a prank or something.

“That’s when a bunch of cops started coming and we knew it was serious, we were trying to leave and one of our teachers started screaming at us. That’s when we knew it was serious.”

US president Joe Biden is tracking the latest on the Iowa shooting, a White House official said, adding that senior staff have been in touch with the Iowa governor’s office.

Today was the first day back for students after the Christmas break.

Perry is about 40 miles northwest of the state’s capital Des Moines.

The high school is part of the 1,785-student Perry Community School District.

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